Morno, OK, in the context of the thread.
Originally Posted by j3pipercub
Are you telling me that you would use 'linear interpollation' to determine QNH source from a 2 hour old TAF as opposed to using a QNH from an automatically generated METAR? And do you trust the forecaster to re-issue the TAF in time if the QNH is outside that stated in the TAF?
I don't make the rules, I just follow them. As I said, I think that the METAR QNH could be used (within limits, of which there are currently none - is a METAR QNH that's 59 minutes old OK for you? Or maybe one that has not been updated for say 75 minutes?).
The good part about people sticking to the rules is that they (the rules) are more-quickly shown to be an ass, and then they get changed.
